Home / 1,216.83-1,821.39-800.62

Finding the Fourth Proportional to 1,216.83, 1,821.39 and 800.62

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Solution

The fourth proportional to 1,216.83, 1,821.39 and 800.62 is: 1,198.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.83 : 1,821.39 = 800.62 : x
  2. Step 2: Convert to fraction form
    1,216.83/1,821.39 = 800.62/x
  3. Step 3: Cross multiply
    1,216.83x = 1,821.39 × 800.62
  4. Step 4: Simplify right side
    1,216.83x = 1,458,241.26
  5. Step 5: Solve for x
    x = 1,458,241.26/1,216.83
  6. Step 6: Final answer
    x = 1,198.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.